1102312221012 has 72 divisors (see below), whose sum is σ = 2900343045600. Its totient is φ = 366071381856.

The previous prime is 1102312220963. The next prime is 1102312221019. The reversal of 1102312221012 is 2101222132011.

1102312221012 is a `hidden beast` number, since 110 + 231 + 222 + 101 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102312221019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1846462 + ... + 2369397.

It is an arithmetic number, because the mean of its divisors is an integer number (40282542300).

Almost surely, 2^{1102312221012} is an apocalyptic number.

1102312221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1102312221012 is an abundant number, since it is smaller than the sum of its proper divisors (1798030824588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1102312221012 is a wasteful number, since it uses less digits than its factorization.

1102312221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4216147 (or 4216133 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1102312221012 its reverse (2101222132011), we get a palindrome (3203534353023).

The spelling of 1102312221012 in words is "one trillion, one hundred two billion, three hundred twelve million, two hundred twenty-one thousand, twelve".